A bitter musical rivalry intertwines with a complex, cross-class romance between a talented middle-class band leader and the daughter of a wealthy, corrupt businessman. As their relationship sparks severe backlash from her powerful family, they must navigate intense socioeconomic conflicts. Meanwhile, a fierce, high-stakes competition between rival youth bands tests the loyalty, friendships, and ambitions of the young musicians involved.

Seya (Sinhala: සේයා) is a 2018 Sri Lankan Sinhala horror film written and directed by Kalyana Chandrasekara and co-produced by A. Parister and Tharanga Athuraliya for Niro Films. It stars an all-female cast of 36 actresses, including, Udari Perera, Dilhani Ekanayake and Menik Wijewardena in lead role along with Deepani Silva, Vishaka Siriwardena and Gayathri Dias. Music composed by Sarath Wickrama. This is Sri Lanka's first all-female featuring movie. It is the 1299th Sri Lankan film in the Sinhala cinema.

A group of close friends from vastly different backgrounds step out of their sheltered lives into the harsh realities of the real world. As they navigate the unpredictable storms of early adulthood, unexpected romance, financial hardships, and deep personal betrayals begin to fracture their tight-knit circle. Together, they are forced to confront the true cost of their ambitions, family expectations, and intense societal pressures.